The solar system was built as a zoo, a museum of sorts for the races we have conquered in our bloody past.

The fools are ignorant of their own true history beyond myths passed down from the first individuals of the 8 races we planted to colonize the planets in the system.

Only the High Command of the Hydrals were aware of our arrangement. We provided their leaders with powers and wealth in exchange for maintaining order in the system through space superiority.

Now with the Hydrals dead, our careful order has fallen apart. And worse, the sole surviving Hydral has united all 8 races into a peaceful federation. This cooperation could lead them to focus outward and discover us, the Obscura, hiding in the shadows.

This federation cannot be allowed to stand! I have been tasked with destroying the federation and restoring our order to the system, without allowing our involvement to become visible. I will break apart this alliance piece by piece and show them the true meaning of betrayal.

In all seriousness, it might be kind of neat to have another operator like yourself sneaking about in the background, slowly emerging as a major player and adversary.

Kind of reminds me of Alpha Centauri: Alien Crossfire, which put two advanced alien subspecies on opposing sides of Planet, with the less sophisticated human factions still involved in their squabbles. It was not the best balanced thing in the universe, but it had a real cool factor.

Glancing at the etymology that Chris mentioned, I see a pattern of not only hiding but also of covering...

More to do with espionage, maybe? There aint much of that right now beyond "spy probes" as far as I know, and informants which are basically just something that opens a larger menu for you. That'd fit the "betrayed" part of the title. Probably.

Though the ghosts would be funnier. Or ghosts AND espionage. GHOST SPIES. I declare that this needs to be a thing now.

Hydras reproduce like Targarians, wedding brother to sister for generations... Perhaps your sibling felt spurned when you left it to be Prometheus with the natives. And now it is going to betray you. By invading your midi-chlorians with a dark plague.

Disney has been taking on a more ominous, "dark" tone these days. It would fit with their Arcen games acquisition.

You've got around four heads - maybe one of them turns evil, trying to destroy your work, so whenever you try to help someone it tries to screw you over. Although I guess you could always just have the evil head amputated then.

Assuming "Obscura" doesn't refer time traveling hydral outpost or something, whats the chance that they will be this games Antarians(From Master of Orion 2) aka evil npc race that aims to kill everyone due to being space Cthulhu/nazis?